Free Online Tool
Browser Fingerprint Test
See exactly what your browser exposes to trackers — canvas hash, GPU renderer, installed fonts, audio fingerprint, and more. Everything runs locally in your browser. Nothing is sent to our servers.
What is browser fingerprinting?
Browser fingerprinting collects browser and device attributes — canvas rendering, installed fonts, GPU model, timezone, screen resolution, and dozens more — to generate a statistically unique identifier without storing any data on your device. Unlike cookies, fingerprints survive clearing your history, private browsing mode, and even VPN use. Advertising networks and fraud detection systems use fingerprinting to track users across sessions and sites.
Unlike traditional cookie tracking, fingerprinting requires no consent dialog and no storage on your device. The technique combines dozens of browser API responses into a single hash that uniquely identifies your browser configuration across sessions and incognito windows. Read our complete browser fingerprinting technical guide for a deep-dive on every vector and countermeasure.
For a comparison of how privacy browsers handle fingerprinting, see State of browser privacy 2026 and our Brave vs Tor vs Mullvad vs LibreWolf comparison.
How to read the entropy badges
Highly identifying — canvas hash, WebGL renderer, audio fingerprint, and detected fonts have enough entropy to uniquely identify most browsers alone.
Identifying in combination — timezone, screen resolution, language list, and platform narrow down a population when combined with other signals.
Minor contribution — DNT setting, cookie status, and touch support add small entropy increments but rarely identify on their own.
Frequently asked questions
Is this browser fingerprint test accurate?
It collects the same signals (canvas, WebGL, AudioContext, fonts, screen, navigator APIs) that real fingerprinting libraries like FingerprintJS use. The uniqueness score is an approximation based on signal entropy — not a statistical measurement from a real user population.
Does this tool track me or store my fingerprint?
No. Every calculation happens inside your browser tab using client-side JavaScript. No data is sent to any server. You can verify this by inspecting the Network tab in DevTools while the test runs.
Does a VPN hide my browser fingerprint?
No. A VPN masks your IP address and ISP, but your canvas hash, WebGL GPU renderer, installed fonts, screen resolution, and AudioContext fingerprint remain completely unchanged. Trackers who rely on these signals will still identify you across VPN sessions.
What browser blocks fingerprinting best?
Mullvad Browser and Tor Browser are purpose-built to normalize fingerprinting signals — they report identical canvas, WebGL, and font data across all users, making individual identification much harder. Brave provides partial protection via randomization. See our full privacy browsers comparison. Read our browser comparison →
What does 'canvas hash' mean?
The canvas fingerprint technique draws text and shapes on an invisible canvas element. Your OS, browser, GPU, and installed fonts all influence the rendering at the pixel level, producing a hash that is unique to your specific hardware and software combination.